Brook Floater vs Far Eastern Brook Lamprey

Alasmidonta varicosa compared with Lethenteron reissneri

Key Differences

• Brook Floater is Vulnerable while Far Eastern Brook Lamprey is Least Concern.

Taxonomic Classification

Rank	Brook Floater	Far Eastern Brook Lamprey
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Mollusca (Mollusks)	Chordata (Chordates)
Class	Bivalvia (Bivalvia)	Petromyzonti (Petromyzonti)
Order	Unionida (Unionida)	Petromyzontiformes (lamprey)
Family	Unionidae	Petromyzontidae
Genus	Alasmidonta	Lethenteron
Species	Alasmidonta varicosa	Lethenteron reissneri

Evolutionary Relationship

Brook Floater and Far Eastern Brook Lamprey share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

Brook Floater

VU — Vulnerable

Far Eastern Brook Lamprey

LC — Least Concern

Physical Characteristics

Attribute	Brook Floater	Far Eastern Brook Lamprey
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Brook Floater

Habitat

Native to North America, inhabiting ecosystems characteristic of the region.

Range

Found in United States. Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its range.

Far Eastern Brook Lamprey

Brook Floater

The Brook Floater (Alasmidonta varicosa) is a species in the genus Alasmidonta. It is currently classified as Vulnerable on the IUCN Red List. Native to North America, inhabiting ecosystems characteristic of the region.